Bret Michaels Has "Setback"

Despite a "minor setback," rocker and reality TV star Bret Michaels remains in critical but stable condition following a type of stroke that causes bleeding at the base of the brain, according to a statement released late Tuesday by his publicist.

Michaels, who has been hospitalized in intensive care since April 22 after a subarachnoid hemorrhage, has developed a complication called hyponatremia, a lack of sodium in the body, which can lead to seizures. The statement does not say whether Michaels, 47, who has had type 1 diabetes since age 6, has had any seizures.

The front man for the glam band Poison, Michaels has been starring on NBC's Celebrity Apprentice (which has finished taping for the season) and touring to promote his solo album Custom Built, due out in June. He had to postpone tour appearances after an emergency appendectomy April 12.

The statement says the most common cause of the type of hemorrhage Michaels had is the rupture of a cerebral aneurysm (a bulge in a brain blood vessel). Doctors plan to continue testing this week to pinpoint the cause of the hemorrhage, the statement said. They have already conducted angiograms, CT scans, MRI's, and transcranial dopplers. Michaels will also be "monitored closely" to make sure no complications occur from his diabetes.

According to the statement, doctors are hopeful that Michaels will recover fully but caution that recovery from this type of hemorrhage can be "very painful" and lengthy, lasting from several weeks to months. "Doctors state Michaels is very lucky as his condition could have been fatal," it said.